22220355 has 8 divisors (see below), whose sum is σ = 35552592. Its totient is φ = 11850848.

The previous prime is 22220339. The next prime is 22220357. The reversal of 22220355 is 55302222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22220355 - 2⁴ = 22220339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22220357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740664 + ... + 740693.

It is an arithmetic number, because the mean of its divisors is an integer number (4444074).

Almost surely, 2^22220355 is an apocalyptic number.

22220355 is a deficient number, since it is larger than the sum of its proper divisors (13332237).

22220355 is a wasteful number, since it uses less digits than its factorization.

22220355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481365.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 22220355 is about 4713.8471549256. The cubic root of 22220355 is about 281.1363471656.

Adding to 22220355 its reverse (55302222), we get a palindrome (77522577).

The spelling of 22220355 in words is "twenty-two million, two hundred twenty thousand, three hundred fifty-five".